The ultimate color under the multicolored black microscope microcosm

[ Focus on Chemical Machinery and Equipment Network ] When we were young, we heard the story of Chang'e flying to the moon from our parents, and gradually formed the image of Chang'e flying to the moon in our hearts; when we grew up, we witnessed the "Chang'e" moon exploration, and China gained in spaceflight The achievements made every Chinese feel proud
.
And this "Chang'e" created by us has also made great contributions to China's aerospace industry and scientific research development on the way to the moon time and time again
.

 

In December 2020, Chang'e 5 brought about 1731 grams of lunar soil samples back to Earth safely.
These dark-looking soils became a direct means for us to understand the composition and structure of the moon
.
With the help of modern technology, the seemingly plain and pitch-black moon shows us what "colorful black" is
.

 

It is reported that the lunar soil samples are divided into three types: powder, granular, and light flakes.
The researchers observed the samples through a microscope with a magnification of 10 times and found that the lunar soil samples contained a lot of minerals, such as olivine, sodium calcium aluminum silicate , Volcanic glass, impact glass, it is these minerals that make the lunar soil dust in the microscopic world appear colorful
.

 

In fact, as a common laboratory instrument, the microscope not only plays an important role in mineral research, but also has many applications in scientific research work such as biological research and material synthesis.
General analysis technology in various fields such as biology, aerospace, materials, and medical treatment
.
And more importantly, the microscope has a very important position in the big environment of science
.

 

While the microscope takes us to observe the microscopic world, it is also regarded as a symbol of human beings entering the microscopic realm
.
In its hundreds of years of history, in order to adapt to different needs and combine different technologies, the microscope has continued to develop and make breakthroughs.
It has also been accompanied by the proposal of many scientific theories, the discovery of scientific laws, and the birth of scientific research results
.
Because of this, the field of microscopes is very complicated.
Although almost every microscope can show us the colors in the microscopic world, the meanings of these colors are not the same
.

 

　　Nowadays, there are roughly two types of microscopes-optical microscopes (light mirrors) and electron microscopes (electron microscopes).
The obvious difference between the two is: optical mirrors use optical lenses as focusing lenses and visible light as light sources; electron microscopes use electromagnetic lenses as focusing lenses ,Using high-energy short-wavelength electron beam as the emission source
.
This also allows the light microscope to display the original physical characteristics of the sample (such as color, shape, etc.
), which can more intuitively observe the fine structure of the sample surface, and the electron microscope can obtain the crystal structure, fine structure, chemical composition, electronic distribution, etc.
The resolving power is stronger
.
If what the light microscope observes is the "natural color" of the substance, then the color observed by the electron microscope is the "intrinsic" of the substance
.

 

　　Many people have a misunderstanding that electron microscopes are a class of instruments far superior to optical microscopes, but they are not
.
Although electron microscopes have obvious advantages in terms of magnification and observation capabilities, electron microscopes also have blind spots
.
For example, electron microscopes require very high vacuum in the working environment, and the irradiation of electron beams will also damage biological samples.
Therefore, research on living organisms is difficult to complete with only electron microscopes
.
Therefore, objectively speaking, optical microscopes and electron microscopes are actually complementary, but what is certain is that under the combined effect of curiosity and technological development, the development of microscopes will get better and better.
In terms of people unlocking the secrets of the microscopic world, Provide more help
.

 

　　Original title: The ultimate color under the colorful black microscope microcosm